A circle is defined by the parametric equations x=1+3cosθx = 1 + 3 \cos \thetax=1+3cosθ, y=−6+3sinθy = -6 + 3 \sin \thetay=−6+3sinθ
Find the centre and the radius of the circle.
215 exam-style questions on Edexcel A Level Maths Parametric Equations, covering 8.1 Parametric Equations, 8.2 Using Trigonometric Identities, 8.3 Curve Sketching, 8.4 Points of Intersection, and 8.5 Modelling with Parametric Equations. Each one has a worked solution and a mark scheme showing where the marks go.